1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* libdiskfs implementation of io_identity RPC
Copyright (C) 1996 Free Software Foundation, Inc.
Written by Michael I. Bushnell, p/BSG.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
#include "priv.h"
#include "io_S.h"
/* Implement io_identity as described in <hurd/io.defs>. */
error_t
diskfs_S_io_identity (struct protid *cred,
mach_port_t *id,
mach_msg_type_name_t *idtype,
mach_port_t *fsys,
mach_msg_type_name_t *fsystype,
int *fileno)
{
struct node *np;
error_t err;
if (!cred)
return EOPNOTSUPP;
np = cred->po->np;
mutex_lock (&np->lock);
if (np->identity == MACH_PORT_NULL)
{
err = mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE,
&np->identity);
if (err)
{
mutex_unlock (&np->lock);
return err;
}
}
*id = np->identity;
*idtype = MACH_MSG_TYPE_MAKE_SEND;
*fsys = diskfs_fsys_identity;
*fsystype = MACH_MSG_TYPE_MAKE_SEND;
*fileno = np->dn_stat.st_ino;
mutex_unlock (&np->lock);
return 0;
}
|
